Excellent advice as usual from CJ.
If it is HG I'd suggest a Subaru specialist (not main dealer) or at least an engine builder with experience of the Subaru Engines. It's more expensive than a lot of other cars as the engine has to come out as the HGs can't easily be done in situ. Plus you've got two heads as well!
A leak down test if done properly should tell you exactly where the leak is so if it's not affected the oil or bores you may get away with just replacing one side but it's probably a false economy!
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2005 Spec B 6MT - KiDO tuned (~270Bhp)
Custom exhaust - Cosworth filter - Samco Intake - Tints - Bilstein B8/B6 & STI springs - SuperPro ALK - Whiteline positive shift kit, rack mounts, rear adjustable camber bushes, front ARB mounts & strut brace, 20mm rear ARB with AVO mounts, - Hardrace Gearbox and pitch mounts - Prodrive PFF7's - Front Brembos - Kenwood CarPlay - 1/2 carbon grille - STI front splitter
Last edited by SpecB; 05-05-2017 at 07:42 AM.
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